On the Solomon Islands, an adaro is a malevolent sea-spirit in the shape of a fish-man, a man with tail fins on his feet and gills behind his ears. He has a horn like a shark's back fin and a pike on his head like a sword fish or sawfish.
It is believed that the adaro travels along rainbows and kills men by shooting poisonous flying fish at them.
In Melanesian belief (San Christoval, Ulawa, southern Mala island), adaro is the the bad part or soul-substance of a man which remains after death as a ghost opposed to They are different from the figona or spirits which were never human.